# ThinkGrid vs Sundown

The clearest difference is ads: ThinkGrid at none against Sundown's shown. Sundown's advantage is update cadence (every 10 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. ThinkGrid sells 5 in-app purchases, starting at $17.99 per year and Sundown sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ThinkGrid ships an update every 3 months, Sundown every 10 days. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ThinkGrid | Sundown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sundown-logic-puzzle-game/id6777302102/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 36 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [De Appmakers](https://appshunter.io/developer/6774161186) | [Nicholas Coleman](https://appshunter.io/developer/6777302104) |

## What reviewers say

### ThinkGrid

[App page](https://appshunter.io/ios/app/thinkgrid-calm-logic-puzzles/id6774161184)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThinkGrid Plus Yearly | $17.99 | per year |
| ThinkGrid Tip Espresso | $1.99 | one-time |
| ThinkGrid Tip Latte | $3.99 | one-time |
| ThinkGrid Tip Pot | $8.99 | one-time |
| ThinkGrid Plus Lifetime | $29.99 | one-time |


### Sundown

[App page](https://appshunter.io/ios/app/sundown-logic-puzzle-game/id6777302102)

A logic puzzle game where you fill grids with suns and moons using pure deduction. Offers daily challenges, adjustable grid sizes and difficulty, and hints to guide your problem-solving. Track your progress and achievements as you master the puzzles.

**Highlights:** Pure logic deduction puzzles, Daily Challenge puzzles, Multiple grid sizes (6x6 to 12x12), Adjustable difficulty levels, Step-by-step deduction hints, Puzzle sharing via codes, Stats, streaks, and achievements

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Play | $2.99 | one-time |


## Frequently asked questions

### Is ThinkGrid free?

ThinkGrid is free to download, with in-app purchases available.

### Is Sundown free?

Sundown is free to download, with in-app purchases available.

### Do ThinkGrid or Sundown have ads?

Sundown shows ads; ThinkGrid does not.

### Which is updated more often, ThinkGrid or Sundown?

ThinkGrid ships an update every 3 months, and Sundown every 10 days. Most recently, ThinkGrid was updated on October 17, 2026 and Sundown on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*